Cellular respiration occurs in every cell of our bodies. Through this process, we obtain the energy we need for life. During cellular respiration, oxygen helps in breaking down sugar
molecules into carbon dioxide and water molecules. Which reaction correctly represents the
cellular respiration process? (1 point)

1)The reactants are unlit charcoal, and the products are charcoal that has already burned and released its energy.

2)sugar + oxygen → carbon dioxide + water + energy

3)iron + oxygen → rusted iron + energy

4)an endothermic reaction, because ice absorbs heat to become liquid water

5)The temperature of the reactants is greater than the temperature of the products.

Explanation:

100%

if the thermos has a vacuum innner, then heat through conv currents and conduction are reduced = vacuum flask

it's when something is going so fast it makes a loud noise, breaking the sound barrier, for example: a jet makes a loud noise, not only cause of the jet but because they reached a point where they went so fast that you can year the noise from various parts, kinda like a police car, lets say the car was going   so fast that you hear the siren of the cop car right next to you, but the car is probably a mile a way, it's cos the siren was next to you a few seconds if you understand me